Boston Celtics' Gordon Hayward grimaces in pain in the first half of an NBA basketball game against the Cleveland Cavaliers, Tuesday, Oct. 17, 2017, in Cleveland. Just five minutes into his Boston career, new Celtics star forward Gordon Hayward gruesomely broke his left ankle, an injury that may end his season.

Just over five minutes into his first game with the Boston Celtics (and the first game of the 2017-2018 NBA campaign), former Utah Jazz All-Star Gordon Hayward went down with a gruesome ankle injury after he collided with Cleveland Cavaliers forwards LeBron James and Jae Crowder on a backdoor alley-oop.